WO2021198069A1 - Axially resilient pressing contact pin - Google Patents

Axially resilient pressing contact pin Download PDF

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Publication number
WO2021198069A1
WO2021198069A1 PCT/EP2021/057932 EP2021057932W WO2021198069A1 WO 2021198069 A1 WO2021198069 A1 WO 2021198069A1 EP 2021057932 W EP2021057932 W EP 2021057932W WO 2021198069 A1 WO2021198069 A1 WO 2021198069A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact pin
press
pin
fit contact
axially resilient
Prior art date
Application number
PCT/EP2021/057932
Other languages
German (de)
French (fr)
Inventor
Norbert Andresen
Frank Kunert
Ralf Ostermann
Matthias Seifert
Heike SKUTTA
Edward Ziebko
Original Assignee
Kostal Automobil Elektrik Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kostal Automobil Elektrik Gmbh & Co. Kg filed Critical Kostal Automobil Elektrik Gmbh & Co. Kg
Priority to CN202180026608.XA priority Critical patent/CN115428266A/en
Priority to EP21716119.9A priority patent/EP4128440A1/en
Publication of WO2021198069A1 publication Critical patent/WO2021198069A1/en
Priority to US17/944,544 priority patent/US20230018520A1/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/17—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with spring member on the pin
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/82—Coupling devices connected with low or zero insertion force
    • H01R12/85—Coupling devices connected with low or zero insertion force contact pressure producing means, contacts activated after insertion of printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2421—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using coil springs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/633—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only
    • H01R13/635—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for disengagement only by mechanical pressure, e.g. spring force
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/7076—Coupling devices for connection between PCB and component, e.g. display
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/79—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures connecting to rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
    • H01R13/2414—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means conductive elastomers

Definitions

  • the invention relates to an axially resilient press-fit contact pin with a metal body which has a press-fit spring and a pin-shaped section, the pin-shaped section being at least partially surrounded by an electrically conductive elastic element and the elastic element extending beyond the free end section of the pin-shaped section .
  • German patent application DE 102006000959 A1 To produce electrical connections between two oppositely arranged printed circuit boards, it is known from the German patent application DE 102006000959 A1 to provide metal pins with press-fit springs formed on both end sections, which are pressed into both printed circuit boards.
  • Zero force connectors which are also known as ZIF connectors, are often used, which receive and contact an end section of the foil conductor.
  • ZIF connectors are relatively expensive, especially if only a few electrical connections have to be made.
  • an axially resilient press-fit contact pin with the features of claim 1.
  • the press-fit contact pin forms a press-fit spring that can be inserted into a metallized hole in a printed circuit board.
  • the opposite second end section is designed to be axially resilient and electrically conductive, so that it can be applied elastically to a contact surface and can build up a certain contact pressure in the process.
  • the second end section of the press-fit contact pin can be formed either by an elastomer body connected to the metal body of the press-fit contact pin or by a metal spring element, for example in the form of a helical spring.
  • Figure 1 shows a first embodiment of a press-fit contact pin
  • Figure 2 shows a second embodiment of a press-fit contact pin
  • FIG. 3 shows a third exemplary embodiment of a press-fit contact pin
  • FIG. 4 shows an application example of the first press-fit contact pin
  • FIG. 5 shows an application example of the second press-fit contact pin
  • FIG. 6 an application example of the third press-fit contact pin
  • FIG. 7 shows an application example of a fourth press-fit contact pin
  • FIG. 8 shows an application example of a fifth press-fit contact pin.
  • FIG. 1 shows a first exemplary embodiment of an axially resilient press-fit contact pin 1 designed according to the invention.
  • the press-fit contact pin 1 consists of a metal body 10, the first end section of which is formed by a press-fit spring 12 shaped as an eyelet.
  • the second end section of the metal body 10 is designed as a pin-shaped section 14.
  • the metal body 10 has a transverse web 16 between the first and the second end section.
  • the pin-shaped section 14 is surrounded by an elastomer body 20 which completely encloses the pin-shaped section 14 and is preferably supported on the transverse web 16.
  • the elastomer body 20 in particular projects beyond the free end of the pin-shaped section 14.
  • the elastomer body 20 is preferably produced by overmolding the pin-shaped section 14 with an elastomer material. It is advantageous if the pin-shaped section 14 has a varying cross-sectional width in its longitudinal direction, for example in the form of a plurality of cross-sectional widenings, which results in a form-fitting connection between the metal body 10 and the elastomer body 20. By means of a suitably selected electrically conductive filler, the elastomer body 20 as a whole has good electrical conductivity.
  • FIG. 1 An application example for the press-fit contact pin 1 shown in FIG. 1 is shown in FIG.
  • the press-fit contact pin 1 is pressed here with its press-fit spring 12 into a metallized bore 42 in a rigid first printed circuit board 40.
  • the conductor foil 50 is supported here by a section of a housing surface 60.
  • the distance between the first circuit board 40 and the second circuit board 50 is set up or the overall axial length of the press-fit contact pin 1 is selected such that the elastomer body 20 is somewhat elastically compressed in the axial direction of the press-fit contact pin 1, so that the end face 22 of the elastomer body 20 with a certain contact pressure on contact surfaces on the second Circuit board 50 comes to the plant.
  • the metallized bore 42 is connected to electrical or electronic components, which are also not shown, on the first printed circuit board 40 via conductor tracks (not shown). This results in an electrically conductive connection between the components on the first circuit board 40 and the contact surfaces of the second circuit board 50 via the press-fit spring 12, the metal body 10 and the electrically conductive elastomer body 20.
  • the conductor foil 50 can thus form, for example, contact surfaces of a capacitive proximity sensor system under the housing surface 60, wherein the components of the associated evaluation electronics can be arranged on the first circuit board 40.
  • FIG. 2 shows a second exemplary embodiment of a press-fit contact pin 2, which makes it clear that the shape of the elastomer body 20 'can be varied.
  • the elastomer body 20 ‘here has two (or more than two) arms 24‘ or even a circular plate with an end face 22 ‘around it.
  • the press-fit contact pin 2 can thus contact several points on the second printed circuit board 50 at the same time.
  • FIG. 3 A third embodiment of an axially resilient press-fit contact pin 3 is shown in FIG.
  • the elastic element 30 is formed here by a metal spring element and specifically as a helical spring.
  • the pin-shaped section 14 'of the metal body 10' can hereby be designed as a simple cylindrical pin and does not require any sections with different cross-sectional widths.
  • this can be welded or soldered to the transverse web 16 of the metal body 10 '.
  • FIG. 6 shows an application example that functions analogously to FIGS. 4 and 5 with a press-fit contact pin 3 according to FIG. 3.
  • FIG. 7 shows a further embodiment of a press-fit contact pin 4.
  • the pin-shaped section 14 "of this press-fit contact pin 4 is folded or rolled up like a screw at its free end, thereby forming a cross-sectional widening 18", onto which an elastomer body 20 "can be injection-molded or otherwise attached.
  • FIG. 8 shows a press-in contact pin 5, the pin-shaped section 14 '"of which has a fir tree-like cross-sectional widening 18'".
  • the elastomer body 20 ′ ′′ is shaped here as a sleeve-like individual part which is preassembled with a housing body 62.
  • the pin-shaped section 14 '" is inserted into the elastomer body 20'
  • the fir tree-like cross-sectional broadening 18 '" digs like a barb on the inner walls of the elastomer body 20'”.
  • a second printed circuit board 50 resting on the housing surface 60 is at the same time pressed against the end surface 22 ′ ′′ of the elastomer body 20 ′ ′′.

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  • Coupling Device And Connection With Printed Circuit (AREA)

Abstract

Described is an axially resilient pressing contact pin comprising a metal body that includes a pressing spring and a pin-type section, at least some portions of which are surrounded by an electrically conductive, flexible element, the flexible element extending beyond the free end region of the pin-type section.

Description

Axial federnder Einpresskontaktstift Axially resilient press-fit contact pin
Die Erfindung betrifft einen axial federnder Einpresskontaktstift, mit einem Metallkörper, der eine Einpressfeder und einen stiftförmigen Abschnitt aufweist, wobei der stiftförmige Abschnitt zumindest abschnittsweise von einem elektrisch leitfähigen elastischen Element umgeben ist und wobei das elastische Element sich über den freien Endabschnitt des stiftförmigen Abschnitts hinaus erstreckt. The invention relates to an axially resilient press-fit contact pin with a metal body which has a press-fit spring and a pin-shaped section, the pin-shaped section being at least partially surrounded by an electrically conductive elastic element and the elastic element extending beyond the free end section of the pin-shaped section .
Zur Herstellung elektrischer Verbindungen zwischen zwei einander gegenüberstehend angeordneten Leiterplatten ist es aus der deutschen Offenlegungsschrift DE 102006000959 A1 bekannt, Metallstifte mit an beiden Endabschnitten angeformten Einpressfedern vorzusehen, welche in beide Leiterplatten eingepresst werden. To produce electrical connections between two oppositely arranged printed circuit boards, it is known from the German patent application DE 102006000959 A1 to provide metal pins with press-fit springs formed on both end sections, which are pressed into both printed circuit boards.
Solche Einpressstifte können nicht verwendet werden, wenn eine der Leiterplatten als ein Folienleiter ausgebildet ist. In diesem Falle werden häufig Nullkraftsteckverbinder, die auch als ZIF-Konnektoren bekannt sind, eingesetzt, welche einen Endabschnitt des Folienleiters aufnehmen und kontaktieren. ZIF-Connectoren sind allerdings relativ kostenaufwändig, insbesondere dann, wenn nur wenige elektrische Verbindungen herzustellen sind. Such press-fit pins cannot be used if one of the circuit boards is designed as a foil conductor. In this case, zero force connectors, which are also known as ZIF connectors, are often used, which receive and contact an end section of the foil conductor. However, ZIF connectors are relatively expensive, especially if only a few electrical connections have to be made.
Es wurde daher nach einer einfach realisierbaren und besonders kostengünstigen Möglichkeit gesucht, einzelne elektrische Verbindungen zwischen einer starren Leiterplatte und einer anderen Kontaktfläche, insbesondere einem Folienleiter, herzustellen. A search was therefore made for an easily realizable and particularly cost-effective possibility of producing individual electrical connections between a rigid printed circuit board and another contact surface, in particular a foil conductor.
Diese Aufgabe wird durch einen axial federnden Einpresskontaktstift mit den Merkmalen des Anspruchs 1 gelöst. Der Einpresskontaktstift bildet an einem ersten Endabschnitt eine Einpressfeder aus, die in eine metallisierte Bohrung in einer Leiterplatte eingesetzt werden kann. Der entgegengesetzte zweite Endabschnitt ist axial federnd und elektrisch leitend ausgeführt, so dass dieser elastisch an eine Kontaktfläche angelegt werden und dabei eine gewissen Kontaktdruck aufbauen kann. This object is achieved by an axially resilient press-fit contact pin with the features of claim 1. At a first end section, the press-fit contact pin forms a press-fit spring that can be inserted into a metallized hole in a printed circuit board. The opposite second end section is designed to be axially resilient and electrically conductive, so that it can be applied elastically to a contact surface and can build up a certain contact pressure in the process.
Der zweite Endabschnitt des Einpresskontaktstifts kann entweder durch einen mit dem Metallkörper des Einpresskontaktstifts verbundenen Elastomerkörper oder durch ein metallenes Federelement, etwa in Form einer Schraubenfeder ausgebildet sein. The second end section of the press-fit contact pin can be formed either by an elastomer body connected to the metal body of the press-fit contact pin or by a metal spring element, for example in the form of a helical spring.
Mehrere Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung dargestellt und näher erläutert. Es zeigen in jeweils einer Schnittansicht die Several exemplary embodiments of the invention are illustrated and explained in more detail below with reference to the drawing. It show in each case a sectional view
Figur 1 ein erstes Ausführungsbeispiel eines Einpresskontaktstifts,Figure 1 shows a first embodiment of a press-fit contact pin,
Figur 2 ein zweites Ausführungsbeispiel eines Einpresskontaktstifts,Figure 2 shows a second embodiment of a press-fit contact pin,
Figur 3 ein drittes Ausführungsbeispiel eines Einpresskontaktstifts,FIG. 3 shows a third exemplary embodiment of a press-fit contact pin,
Figur 4 ein Anwendungsbeispiel des ersten Einpresskontaktstifts,FIG. 4 shows an application example of the first press-fit contact pin,
Figur 5 ein Anwendungsbeispiel des zweiten Einpresskontaktstifts,FIG. 5 shows an application example of the second press-fit contact pin,
Figur 6 ein Anwendungsbeispiel des dritten Einpresskontaktstifts,FIG. 6 an application example of the third press-fit contact pin,
Figur 7 ein Anwendungsbeispiel eines vierten Einpresskontaktstifts,FIG. 7 shows an application example of a fourth press-fit contact pin,
Figur 8 ein Anwendungsbeispiel eines fünften Einpresskontaktstifts.FIG. 8 shows an application example of a fifth press-fit contact pin.
Die Figur 1 zeigt ein erstes Ausführungsbeispiel eines erfindungsgemäß ausgeführten axial federnden Einpresskontaktstifts 1. Der Einpresskontaktstift 1 besteht aus einem Metallkörper 10, dessen erster Endabschnitt durch eine als Öse geformte Einpressfeder 12 ausgebildet ist. FIG. 1 shows a first exemplary embodiment of an axially resilient press-fit contact pin 1 designed according to the invention. The press-fit contact pin 1 consists of a metal body 10, the first end section of which is formed by a press-fit spring 12 shaped as an eyelet.
Der zweite Endabschnitt des Metallkörpers 10 ist als ein stiftförmiger Abschnitt 14 ausgeführt. Zwischen dem ersten und dem zweiten Endabschnitt weist der Metallkörper 10 einen Quersteg 16 auf. Der stiftförmige Abschnitt 14 ist von einem Elastomerkörper 20 umgeben, der den stiftförmigen Abschnitt 14 vollständig einschließt und sich auf dem Quersteg 16 vorzugsweise abstützt. Der Elastomerkörper 20 überragt dabei insbesondere das freie Ende des stiftförmigen Abschnitts 14. The second end section of the metal body 10 is designed as a pin-shaped section 14. The metal body 10 has a transverse web 16 between the first and the second end section. The pin-shaped section 14 is surrounded by an elastomer body 20 which completely encloses the pin-shaped section 14 and is preferably supported on the transverse web 16. The elastomer body 20 in particular projects beyond the free end of the pin-shaped section 14.
Der Elastomerkörper 20 ist vorzugsweise durch Umspritzen des stiftförmigen Abschnitts 14 mit einem elastomeren Material hergestellt. Dabei ist es vorteilhaft, wenn der stiftförmige Abschnitt 14 in seiner Längsrichtung eine variierende Querschnittsweite, etwa in Form mehrerer Querschnittsverbreiterungen aufweist, wodurch sich eine formschlüssige Verbindung zwischen dem Metallkörper 10 und dem Elastomerkörper 20 ergibt. Durch einen geeignet gewählten elektrisch leitenden Füllstoff ist der Elastomerkörper 20 im Ganzen elektrisch gut leitfähig ausgebildet. The elastomer body 20 is preferably produced by overmolding the pin-shaped section 14 with an elastomer material. It is advantageous if the pin-shaped section 14 has a varying cross-sectional width in its longitudinal direction, for example in the form of a plurality of cross-sectional widenings, which results in a form-fitting connection between the metal body 10 and the elastomer body 20. By means of a suitably selected electrically conductive filler, the elastomer body 20 as a whole has good electrical conductivity.
Ein Anwendungsbeispiel für den in der Figur 1 dargestellten Einpresskontaktstift 1 ist in der Figur 4 dargestellt. Der Einpresskontaktstift 1 ist hier mit seiner Einpressfeder 12 in eine metallisierte Bohrung 42 in einer starren ersten Leiterplatte 40 eingepresst. An application example for the press-fit contact pin 1 shown in FIG. 1 is shown in FIG. The press-fit contact pin 1 is pressed here with its press-fit spring 12 into a metallized bore 42 in a rigid first printed circuit board 40.
Der gegenüberliegende Endabschnitt des Einpresskontaktstifts 1 , der durch die Stirnfläche 22 des Elastomerkörpers 20 gebildet wird, liegt an einer zweiten Leiterplatte 50 an, die als eine Leiterfolie ausgebildet ist. Die Leiterfolie 50 wird hier durch einen Abschnitt einer Gehäusefläche 60 abgestützt. The opposite end section of the press-fit contact pin 1, which is formed by the end face 22 of the elastomer body 20, rests against a second printed circuit board 50, which is designed as a conductor foil. The conductor foil 50 is supported here by a section of a housing surface 60.
Der Abstand zwischen der ersten Leiterplatte 40 und zweiten Leiterplatte 50 ist so eingerichtet beziehungsweise die axiale Gesamtlänge des Einpresskontaktstifts 1 ist so gewählt, dass der Elastomerkörper 20 in der axialen Richtung des Einpresskontaktstifts 1 elastisch etwas zusammengestaucht wird, so dass die Stirnfläche 22 des Elastomerkörpers 20 mit einem gewissen Kontaktdruck an Kontaktflächen auf der zweiten Leiterplatte 50 zur Anlage kommt. The distance between the first circuit board 40 and the second circuit board 50 is set up or the overall axial length of the press-fit contact pin 1 is selected such that the elastomer body 20 is somewhat elastically compressed in the axial direction of the press-fit contact pin 1, so that the end face 22 of the elastomer body 20 with a certain contact pressure on contact surfaces on the second Circuit board 50 comes to the plant.
Es sei angenommen, dass die metallisierte Bohrung 42 über nicht dargestellte Leiterbahnen auf der ersten Leiterplatte 40 mit ebenfalls nicht dargestellten elektrischen oder elektronischen Bauelementen in Verbindung steht. Somit ergibt sich über die Einpressfeder 12, den Metallkörper 10 und den elektrisch leitfähigen Elastomerkörper 20 eine elektrisch leitende Verbindung zwischen den Bauelementen auf der ersten Leiterplatte 40 zu den Kontaktflächen der zweiten Leiterplatte 50. It is assumed that the metallized bore 42 is connected to electrical or electronic components, which are also not shown, on the first printed circuit board 40 via conductor tracks (not shown). This results in an electrically conductive connection between the components on the first circuit board 40 and the contact surfaces of the second circuit board 50 via the press-fit spring 12, the metal body 10 and the electrically conductive elastomer body 20.
Die Leiterfolie 50 kann so beispielsweise Kontaktflächen einer kapazitiven Annäherungssensorik unter der Gehäusefläche 60 ausbilden, wobei die Bauelemente der zugehörigen Auswerteelektronik auf der ersten Leiterplatte 40 angeordnet sein können. The conductor foil 50 can thus form, for example, contact surfaces of a capacitive proximity sensor system under the housing surface 60, wherein the components of the associated evaluation electronics can be arranged on the first circuit board 40.
Die Figur 2 zeigt ein zweites Ausführungsbeispiel eines Einpresskontaktstifts 2, welches verdeutlicht, dass die Form des Elastomerkörpers 20‘ variiert werden kann. Statt einer einzigen Stirnfläche 22 wie der Elastomerkörper 20 in der Figur 1 , weist der Elastomerkörper 20‘ hier zwei (oder auch mehr als zwei) Arme 24‘ oder sogar umlaufend einen kreisringförmigen Teller mit jeweils einer Stirnfläche 22‘ auf. Wie aus der Figur 5 hervorgeht, kann der Einpresskontaktstift 2 so zugleich mehrere Stellen der zweiten Leiterplatte 50 kontaktieren. FIG. 2 shows a second exemplary embodiment of a press-fit contact pin 2, which makes it clear that the shape of the elastomer body 20 'can be varied. Instead of a single end face 22 like the elastomer body 20 in FIG. 1, the elastomer body 20 ‘here has two (or more than two) arms 24‘ or even a circular plate with an end face 22 ‘around it. As can be seen from FIG. 5, the press-fit contact pin 2 can thus contact several points on the second printed circuit board 50 at the same time.
Eine dritte Ausführung eines axial federnden Einpresskontaktstifts 3 ist in der Figur 3 dargestellt. Das elastische Element 30 ist hier durch ein metallenes Federelement und speziell als eine Schraubenfeder ausgebildet. A third embodiment of an axially resilient press-fit contact pin 3 is shown in FIG. The elastic element 30 is formed here by a metal spring element and specifically as a helical spring.
Der stiftförmige Abschnitt 14‘ des Metallkörpers 10‘ kann hierdurch als ein einfacher zylinderförmiger Stift ausgebildet sein, und benötigt keine Abschnitte mit unterschiedlichen Querschnittsweiten. Zur Fixierung der Schraubenfeder 30 kann diese mit dem Quersteg 16 des Metallkörper 10‘ verschweißt oder verlötet sein. The pin-shaped section 14 'of the metal body 10' can hereby be designed as a simple cylindrical pin and does not require any sections with different cross-sectional widths. For fixing the coil spring 30, this can be welded or soldered to the transverse web 16 of the metal body 10 '.
Die Figur 6 zeigt ein analog zu den Figuren 4 und 5 funktionierendes Anwendungsbeispiel mit einem Einpresskontaktstift 3 gemäß der Figur 3. FIG. 6 shows an application example that functions analogously to FIGS. 4 and 5 with a press-fit contact pin 3 according to FIG. 3.
Die Figur 7 zeigt eine weitere Ausführung eines Einpresskontaktstifts 4. Der stiftförmige Abschnitt 14“ dieses Einpresskontaktstifts 4 ist an seinem freien Ende gefaltet oder schraubenartig aufgerollt, wodurch er eine Querschnittsverbreiterung 18“ ausbildet, an der ein Elastomerkörper 20“ angespritzt oder anderweitig befestigt werden kann. FIG. 7 shows a further embodiment of a press-fit contact pin 4. The pin-shaped section 14 "of this press-fit contact pin 4 is folded or rolled up like a screw at its free end, thereby forming a cross-sectional widening 18", onto which an elastomer body 20 "can be injection-molded or otherwise attached.
Die Figur 8 zeigt als ein letztes Ausführungsbeispiel einen Einpresskontaktstift 5, dessen stiftförmiger Abschnitt 14‘“ tannenbaumartige Querschnittsverbreiterung 18‘“ aufweist. Der Elastomerkörper 20‘“ ist hier als hülsenartiges Einzelteil geformt, welches mit einem Gehäusekörper 62 vormontiert ist. Beim Einsetzen des stiftförmigen Abschnitts 14‘“ in den Elastomerkörper 20‘“ verkrallt sich die tannenbaumartige Querschnittsverbreiterung 18‘“ widerhakenartig an den Innenwänden des Elastomerkörpers 20‘“. Bei der Montage einer Gehäusefläche 60 an den Gehäusekörper 62, wird zugleich eine an der Gehäusefläche 60 anliegende zweite Leiterplatte 50 an die Stirnfläche 22‘“ des Elastomerkörpers 20‘“ angepresst. As a last exemplary embodiment, FIG. 8 shows a press-in contact pin 5, the pin-shaped section 14 '"of which has a fir tree-like cross-sectional widening 18'". The elastomer body 20 ′ ″ is shaped here as a sleeve-like individual part which is preassembled with a housing body 62. When the pin-shaped section 14 '"is inserted into the elastomer body 20'", the fir tree-like cross-sectional broadening 18 '"digs like a barb on the inner walls of the elastomer body 20'". When assembling a housing surface 60 on the housing body 62, a second printed circuit board 50 resting on the housing surface 60 is at the same time pressed against the end surface 22 ′ ″ of the elastomer body 20 ′ ″.
Bezugszeichen Reference number
1 , 2, 3, 4, 5 Einpresskontaktstift 10, 10‘ Metallkörper 1, 2, 3, 4, 5 press-fit contact pin 10, 10 ‘metal body
12 Einpressfeder 14, 14‘, 14“, 14‘“ stiftförmiger Abschnitt 12 Press-in spring 14, 14 ‘, 14", 14 ‘" pin-shaped section
16 Quersteg 16 crossbar
18, 18“, 18‘“ Querschnittsverbreiterungen 18, 18 ", 18‘ "cross-section extensions
20, 20‘, 20“, 20’” Elastomerkörper (elastisches Element) 22, 22‘, 22‘“ Stirnfläche 24 Arme 20, 20 ‘, 20“, 20 ’” elastomer body (elastic element) 22, 22 ‘, 22‘ “face 24 arms
30 Schraubenfeder (elastisches Element) 40 erste Leiterplatte 42 metallisierte Bohrung 50 zweite Leiterplatte (Leiterfolie) 60 Gehäusefläche 30 helical spring (elastic element) 40 first printed circuit board 42 metallized bore 50 second printed circuit board (conductive foil) 60 housing surface
62 Gehäusekörper 62 housing body

Claims

Patentansprüche Claims
1. Axial federnder Einpresskontaktstift (1 , 2, 3, 4, 5), mit einem Metallkörper (10, 10‘), der eine Einpressfeder (12) und einen stiftförmigen Abschnitt (14, 14‘, 14“, 14‘“) aufweist, wobei der stiftförmige Abschnitt (14, 14‘, 14“, 14‘“) zumindest abschnittsweise von einem elektrisch leitfähigen elastischen Element (20, 20‘, 20“, 20’”, 30) umgeben ist und wobei das elastische Element (20, 20‘, 20“, 20’”, 30) sich über den freien Endabschnitt des stiftförmigen Abschnitts (14, 14‘, 14“, 14‘“) hinaus erstreckt. 1. Axially resilient press-fit contact pin (1, 2, 3, 4, 5), with a metal body (10, 10 '), which has a press-fit spring (12) and a pin-shaped section (14, 14', 14 ", 14 '") comprises, wherein the pin-shaped section (14, 14 ', 14 ", 14'") is at least partially surrounded by an electrically conductive elastic element (20, 20 ', 20 ", 20'", 30) and wherein the elastic element ( 20, 20 ', 20 ", 20'", 30) extends beyond the free end section of the pin-shaped section (14, 14 ', 14 ", 14'").
2. Axial federnder Einpresskontaktstift (1 , 2, 3, 4, 5) nach Anspruch 1 , dadurch gekennzeichnet, dass das elastische Element (20, 20‘, 20“, 20”’, 30) eine Schraubenfeder (30) ist. 2. Axially resilient press-fit contact pin (1, 2, 3, 4, 5) according to claim 1, characterized in that the elastic element (20, 20 ‘, 20", 20 "’, 30) is a helical spring (30).
3. Axial federnder Einpresskontaktstift (1 , 2, 3, 4, 5) nach Anspruch 1 , dadurch gekennzeichnet, dass das elastische Element (20, 20‘, 20“, 20”’, 30) ein elektrisch leitfähiger Elastomerkörper (20, 20‘, 20“, 20”’) ist. 3. Axially resilient press-fit contact pin (1, 2, 3, 4, 5) according to claim 1, characterized in that the elastic element (20, 20 ', 20 ", 20"', 30) is an electrically conductive elastomer body (20, 20 ', 20 ", 20"') is.
4. Axial federnder Einpresskontaktstift (1 , 2, 3, 4, 5) nach Anspruch 3, dadurch gekennzeichnet, dass zur Ausbildung des elektrisch leitfähigen Elastomerkörpers (20, 20‘, 20“, 20”’) der stiftförmige Abschnitt (14, 14‘,4. Axially resilient press-fit contact pin (1, 2, 3, 4, 5) according to claim 3, characterized in that the pin-shaped section (14, 14 ',
14“, 14‘“) mit einem elektrisch leitfähigen Elastomermaterial umspritzt ist. 14 ", 14‘ ") is encapsulated with an electrically conductive elastomer material.
5. Axial federnder Einpresskontaktstift (1 , 2, 3, 4, 5) nach Anspruch 3, dadurch gekennzeichnet, dass der stiftförmige Abschnitt (14, 14‘, 14“, 14‘“) bereichsweise angeformte Querschnittsverbreiterungen (18, 18“, 18‘“) aufweist. 5. Axially resilient press-fit contact pin (1, 2, 3, 4, 5) according to claim 3, characterized in that the pin-shaped section (14, 14 ', 14 ", 14'") has cross-sectional enlargements (18, 18 ", 18 '") having.
6. Axial federnder Einpresskontaktstift (1 , 2, 3, 4, 5) nach Anspruch 1 , dadurch gekennzeichnet, dass der Einpresskontaktstift (1 , 2, 3, 4, 5) zwei Leiterplatten (40, 50) elektrisch miteinander verbindet. 6. Axially resilient press-fit contact pin (1, 2, 3, 4, 5) according to claim 1, characterized in that the press-fit contact pin (1, 2, 3, 4, 5) has two Electrically connects printed circuit boards (40, 50) to one another.
7. Axial federnder Einpresskontaktstift (1 , 2, 3, 4, 5) nach Anspruch 6, dadurch gekennzeichnet, dass eine der Leiterplatten (40, 50) als Leiterfolie (50) ausgebildet ist. 7. Axially resilient press-fit contact pin (1, 2, 3, 4, 5) according to claim 6, characterized in that one of the circuit boards (40, 50) is designed as a conductor foil (50).
PCT/EP2021/057932 2020-04-01 2021-03-26 Axially resilient pressing contact pin WO2021198069A1 (en)

Priority Applications (3)

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CN202180026608.XA CN115428266A (en) 2020-04-01 2021-03-26 Axially elastic press-in contact pin
EP21716119.9A EP4128440A1 (en) 2020-04-01 2021-03-26 Axially resilient pressing contact pin
US17/944,544 US20230018520A1 (en) 2020-04-01 2022-09-14 Axially Resilient Pressing Contact Pin

Applications Claiming Priority (2)

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DE102020002076.3A DE102020002076A1 (en) 2020-04-01 2020-04-01 Axially resilient press-fit contact pin
DE102020002076.3 2020-04-01

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WO2021198069A1 true WO2021198069A1 (en) 2021-10-07

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EP (1) EP4128440A1 (en)
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US4548450A (en) * 1984-05-29 1985-10-22 Gte Communication Systems Corporation Terminal pin securing arrangement
US5810617A (en) * 1996-03-18 1998-09-22 Japan Solderless Terminal Mfg Co., Ltd. Jumper connector
US6565395B1 (en) * 2001-12-21 2003-05-20 Northrop Grumman Corporation Electrical connection to a coil spring through a local interference fit for connection to a vibratory rotation sensor and method of forming the same
DE102006000959A1 (en) 2006-01-07 2007-07-12 Leopold Kostal Gmbh & Co. Kg Electrical device for motor vehicle, has pressing pin that is pressed with end section into switch carrier to establish electrical connection, and another end section of pin is pressed into another carrier to establish connection
DE102015107535A1 (en) * 2015-05-13 2016-11-17 Te Connectivity Germany Gmbh Electronic / electrical contact spring

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CN115428266A (en) 2022-12-02
DE102020002076A1 (en) 2021-10-07
EP4128440A1 (en) 2023-02-08

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